package/gnuradio: drop gr-pager (gr-flex) option

gr-pager (labeled 'gr-flex' in our menuconfig) is not available since
bump to version 3.8.0.0 in commit 0d6a7b2981d4 (package/gnuradio: bump
to version 3.8.0.0) and upstream commit:
    https://github.com/gnuradio/gnuradio/commit/2d2caa205f3c3059deab7c82660908656167fd90

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

Config.in.legacy

@@ -144,6 +144,14 @@ endif
 
 ###############################################################################
 
+comment "Legacy options removed in 2021.11"
+
+config BR2_PACKAGE_GNURADIO_PAGER
+	bool "gnuradio gr-flex support removed"
+	select BR2_LEGACY
+	help
+	  gr-flex has been removed from gnuradio since version 3.8.0.0.
+
 comment "Legacy options removed in 2021.08"
 
 config BR2_PACKAGE_LIBMCRYPT

package/gnuradio/Config.in

@@ -130,12 +130,6 @@ config BR2_PACKAGE_GNURADIO_FILTER
 	help
 	  Filter signal processing blocks
 
-config BR2_PACKAGE_GNURADIO_PAGER
-	bool "gr-flex support"
-	select BR2_PACKAGE_GNURADIO_ANALOG
-	help
-	  FLEX pager decoder implementation blocks
-
 config BR2_PACKAGE_GNURADIO_QTGUI
 	bool "gr-qtgui"
 	depends on BR2_PACKAGE_GNURADIO_PYTHON

package/gnuradio/gnuradio.mk

@@ -130,12 +130,6 @@ else
 GNURADIO_CONF_OPTS += -DENABLE_PYTHON=OFF
 endif
 
-ifeq ($(BR2_PACKAGE_GNURADIO_PAGER),y)
-GNURADIO_CONF_OPTS += -DENABLE_GR_PAGER=ON
-else
-GNURADIO_CONF_OPTS += -DENABLE_GR_PAGER=OFF
-endif
-
 ifeq ($(BR2_PACKAGE_GNURADIO_QTGUI),y)
 GNURADIO_DEPENDENCIES += qt5base python-pyqt5 qwt
 GNURADIO_CONF_OPTS += -DENABLE_GR_QTGUI=ON